/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendRegistries.h
Register an external node with the frontend.
A node registration key. If the registration failed, then the registry key will be invalid.
[FNodeRegistryKey](API\Plugins\MetasoundFrontend\FMetasoundFrontendRegistryContai-\FNodeRegistryKey) RegisterNode ( [TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< [Metasound::Frontend::INodeRegistryEntry](API\Plugins\MetasoundFrontend\INodeRegistryEntry) > && InEntry )